GoldWave is a professional digital audio editor. Use it to play, edit, mix, and analyze audio, or apply special effects, such as fade, equalizer, echo, reverse, time warp, noise reduction, silence reduction, pop/click filter, voice over, etc. Record new files from cassettes, albums, radio, or microphone and restore and enhance them using the wide range of filters and effects. Digitally copy tracks directly from audio CDs to edit or remix them. Convert all your iTunes M4A songs to MP3, match volume levels between songs, trim leading and trailing silences, adjust equalization to prepare your songs for a perfect MP3 CD or before copying them to your MP3 player.